Excavator



No. a|7,s05. Patented lan m; I899. w. s. RUSSELL.

EXCAVATOB.

(Application filed July 25, 189B.)

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Pa te nted Jan. l0, I899. W. S. RUSSELL.

EXGAVATOB.

(Application filed July 25, 1898.) v

3 Sheets-Sheet (No Model.)

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No. 617,605. Patented Jan. I0, [899.- w. s. RUSSELL.

EXCAVATOB.

- (Application filed July 25, 1898.) (N0 Model.) 3 SheetsSheet 3.

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WITNESSES INVENTOH A 770/?NEY8.

UNITED STATES PATENT OFFICE.

WILLIA s. RUSSELL, or TOLEDO, OHIO.

EXCAVATO R.

SPECIFICATION forming part of Letters Patent No. 617,605, dated January10, 1899. Application filed my 25,1898. $eri'al No- 686,822 (in, model.)

To all whom it may concern:

Be it known that 1, WILLIAM S. RUssELL, of Toledo, in the county ofLucas and State of Ohio, have'invented certain new and usefulImprovements in Excavators, of which thefollowing is a full, clear, andexact descrip-.

tion, reference being had to the accompanying drawings and to theletters of reference marked thereon.

My invention relates especially to machines used for excavating earthand other material by means of a dipper so constructed as to take up theload, elevate it, swing it toward either side of the machine, dump it,and be returned to position to take another load. These machines areusually mounted on wheels for land use and are commonly calledexcavators, steam-shovels, or landdredges.

The purpose of my invention is to equip an excavator, steam-shovel, orland-dredge with an efficient device, amply strong and simple, forsupporting the front end of machine and also for turning the whole maincar and frame completely around end to end to reverse it in order thatit may work in either direction.

The purpose and use of the turn-table hereinafter described is, first,to support the front end of machine while working or moving over therails, and, second, to support the whole machine entirely on a point ofbalance while being swung or turned around. In order to accomplish this,the turntable is detachable from and not fastened to car-body, beingloose, butheld in place by metal rings having flanges and which form aseat to receive the upper ball-bearing ring of turn-table. There are twoof these metal flange-rings, which are securely fastened to under sideof car-body, one of these being directly under front end of car and theother back toward middle of car at point of balance.

In order to turn the machine around, the front end of car is raised bymeans of jackscrews until the flanges on metal ring are clear ofturn-table. The turn-table is then slid or moved'back under thebalance-ring, I and machine is lowered down in place, the whole weightresting upon turn-table.

I have shown my invention as applied or in connection with an ordinaryexcavator or steady it while working.

steam-shovel of the crane type; but it may be used on excavators ofother styles which are provided with a boom and dipper or other means ofraising, swinging, and dumping the load, while the car or main body ofmachine remains stationary.

In the drawings, Figure 1 is a side elevation of a crane-excavator,illustrating the application ofmy improvements, showing the excavatorsupported at front end by turn-table truck in full lines and at rear endby a plain center-pin truck in working position and the position ofturn-table when moved back to second or middle ring at center of balancebeing indicated by dotted lines; Fig. 2, alongitudinal section ofturntable and metal flange-rings on a larger scale; Fig. 3, a transversesection, on about line 3 3, Fig. 2, of turntable, showing metalflange-ring as fastened to car-body, also the girder j ack-armsextending across car and fitted with heavy screws used in raising frontend of car and also to Fig. 3 also shows turn-table wheels and axles andcenter plates. Fig. 4 is a top plan of turn-table with view ofroller-bearing in part'cut away. Fig. 5 illustrates in detail sectionalperspective the metal flange-ring, ball-bearing races, and base or Ibeam.

In Fig. 1, A represents the main car-body of excavator; B, the crane; O,the dipper; D, thedipper-handle; E, the swing-circle, used for swingingthe crane around in order to dump the load; F, the mastor crane-post; G,the main hoisting-drum; II, the hoisting-engine; I, the swinging-engine;J, the cranethrusting engine; K, the boiler, and L the rear truck.

In Fig. 2, M M represent the metal flangerings, which are fastened tounder side of car;

N N, the upper and lower ball-races, with turned grooves N in theiradjacent faces; 0,

the steel balls, which afford the means for sup is supported by thecar-wheels, four in numher, and axles fitted with double bearings, asshown.

The beam M is provided in its under side with the annular groove m,which receives the upper ball-race N and holds the same steadily in itsplace. The lower ball-race N has a grooved connection with the base-beam1, being preferably provided with a groove n fitting on the said beam P,as shown. The seat M is similar to the seat M and is adapted to receivethe upper ball-race N when the turntable is adjusted rearward, asindicated in dotted lines, Fig. 1. The object and use for which thisturn-table is designed is to afford a means of turning any style ofexcavatingmachine to which it may be fitted completely around or end forend, so that upon finishing a cut the apparatus may be turned around andbegin another cut in an opposite direction or at right angles, if sodesired. This turn-table is capable of sustaining the entire weight ofthe excavator upon the rails on which it is worked when it is to beturned around and also to support the front end of machine when working.

The jack-arm girder R extends at both ends laterally beyond the car bodyor platform and supports at its ends the threaded bearings S for theupright jack-screws S, which may be utilized to raise the end of the carand also to serve as lateral braces to stay the car-platform in alateral direction. This jack-arm is of a special construction, beingformed with the upper beam R and the lower beam R extended,respectively, above and below the car body or platform and bolted firmlyin position. The extending ends of the beams R R support the threadedbearings S between them and are suitably braced, preferably by thelattice-bars R as shown.

, The turn-table truck has at its center the center bearing T, in whichrests the pivotpiece T onthe car-platform, such pivot-pieces beingarranged centrally of both rings or seats M and M, as shown.

In the practical operation of my excavator, owing to the slight frictionof ball-bearing turn-table, the car may be easily turned by fouror fivemen pushing against the rear side and without the aid of any mechanicaldevice. The raising of the rear end of car, so that the wheels on reartruck may clear the rails, is accomplished by running the longdipper-handle with dipper attached out to its extreme length, which willextend forty feet from the mast at the front end of car, also by runningthe water down in tank under boiler, which when full contains tenhundred and sixty gallons. This will lighten rear end, so it will beoverbalanced by the other end. In ordinary working the car is operatedupon short sections of rails eight feet long, which rest loose upon theties. It is not necessary to raise the rear truck-wheels so high thatthe flanges clear the rails, but simply to raise them one-fourth of aninch. The short rails are then pulled out from under the wheels, leavingall clear, and in case there is no steam in the boiler to thrust thedipper out a jackscrew maybe used under the rear end to raise it to therequired height.

It will be understood that when the dipper is pulled in on the crane andthe tank is full of water the car is then in balance on turntable,placed under middle ring.

Having thus described my invention, what 'I claim as new, and desire tosecure by Letters Patent, is

1. In an apparatus substantially as described the car body or platformhaving a truck at one end and having at or near its other end a seat forthe turn-table truck and having a similar seat between such end seat andtruck, and the turn-table truck having wheels to run on the rails andfitted at its upper end to the intermediate and end seats of the carbody or platform whereby it may be shifted to serve its dual functionssubstantially as set forth.

2. In an apparatus substantially as described, the car body or platformcombined with the turn-table truck shiftable from a point at or near oneend of the car to a point at or near the middle thereof substantially asset forth.

3. An apparatus substantially as described comprising the car body orplatform having at or near its end and at or near its middle, theseat-beams provided in their under sides with grooves and the turn-tabletruck having the top ring fitted to such grooves substantially as setforth.

4:. An apparatus substantially as described comprising the car body 01'platform, the permanent truck at one end thereof, the seats for. theshiftable truck at or near the opposite end of and at or near the centerof the platform and the shiftable truck fitted to said seats and adaptedto be shifted from one to the other thereof substantiallyas shown anddescribed.

5. An apparatus substantially as described comprising the car body orplatform, the seatbeams having the grooves in their under sides, thetruck-frame having the circular beam at its upper side, the upperball-race ring fitted in the groove of the seat-beam, the balls and thelower ball-race ring having a grooved connection with the circular beamat the top of the truck-frame substantially as set forth.

6. An apparatus substantially as described comprising the car body orplatform, the turntable truck shiftable between positions at or near theend and at or near the middle of the car-body and the j ack-arm securedto the car body or platform and extended at its ends beyond the same,and provided with the screws substantially as set forth.

7. An apparatus substantially as described comprising the car body orplatform, the excavating devices thereon, the ring-seats beneath and ator near the middle and one end of the platform, the permanent truck atone IIC end of the platform, the turn-table truck fitted to saidring-seats and adapted for adj ustment to support one end of theplatform or support the same at its center of balance and the jack-armsecured to the car-platform having its ends extended beyond the same andprovided with the screws substantially as set forth.

8. The improved apparatus herein described consisting of the car body orplatform, the excavating devices thereon, the jack-arm composed of beamsextended above and below the car-body, the lattice brace-bars betweensaid beams, the screws connected With the jack-arm, the ring-seat nearone end I 5 of the car-body, the ring-frame near the mid dle of thecar-body, the permanent truck at one end of the car and the turn-tabletruck having a lower ball-race, and an upper ballrace, the latter beingfitted to the ring-seat of 20 the car-body substantially as set forth.

WILLIAM S. RUSSELL.

Witnesses:

W. F. RoBIsoN, W. E. OAWOOD.

